Question about 2003 Harley Davidson FXDWG Dyna Wide Glide

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If the front brake light switch is bad could that make the brake light not work even if the rear brake switch was good

And is this a complete circut

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Connect the two wires on rear brake switch and see if the brake light goes on,if not then your rear brake switch is out.

Posted on Jun 09, 2014

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Posted on Jan 02, 2017

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wd4ity
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SOURCE: When I use the back brake, the brake light won't

Replace the rear brake light switch. I've run into this before as well. When checking the switch with an ohm meter, it appears good but it will not light the rear bulb. The front brake light switch worked correctly as well. I can't explain it but replacing the switch, even though it checks good, solves the problem every time.

Posted on Mar 23, 2010

Testimonial: "The switch was definateley the problem. I change it and now the brake light works as it should."

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SOURCE: No rear brake light on 2009 Ultra. Where is the

The rear brake is activated by a electric/hydraulic switch located in line with the rear brake line. It is located behind the rear brake pedal, and faces forward. It is about 3 1/2" long and an inch in diameter, cylindrically shaped. That is probably what is the problem is. You can check the wires for corrosion and connection first.

Posted on Sep 21, 2010

wd4ity
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SOURCE: rear brake light will not

It sounds like the rear brake pressure switch is bad. The wires for the front brake light switch are wired in parallel to the this switch. Replace the pressure switch in the metal brake line coming from the rear brake master cylinder going to the rear brake caliper.

Good Luck
Steve

Posted on Aug 23, 2011

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Rear brake light will not work when brake pedal is applied, both front and rear brakes run through same sensor front brake applies rear light, but rear brake pedal doesnt. where is the problem?


It sounds like the rear brake pressure switch is bad. The wires for the front brake light switch are wired in parallel to the this switch. Replace the pressure switch in the metal brake line coming from the rear brake master cylinder going to the rear brake caliper.

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1 Answer

Brake light does not work when brake is engauged


You have two brake light switches, one for the rear brake and one for the front brake. If neither switch turns the brake light on, the first thing to check is the bulb. If the bulb is good, check the socket and the wiring to it.

If all that is good, find the rear brake master cylinder. Follow the metal tube coming out of it going to the rear brake. Underneath the bike, there is a pressure switch that turns on the rear brake light. Check to make sure the wires are connected and that one set of wires is "hot" when the ignition switch is in the "ON" position. If so, the switch is probably bad. Replace the switch. I have seen them check good with a meter but still not turn on the brake light. Work with the rear brake light switch first as it's the easiest and least expensive to fix. When you get that working, repost and I'll take you through replacing the front brake light switch. It's quite a bit more difficult to replace than the rear switch. I'm sure that procedure is in the archives as well because I've posted it a number of times.

Good Luck
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1 Answer

Brake lights dont work everything else does, i checked fuses and brake switch and all bulbs,and even the third brake works. what can be the problem.


Both bulbs are burned out, fuse and switch good but it could be a bad wire that sends the power to rear lights check at connection toward rear of car, use stick or put a block in front of brake pedal to activate if testing by yourself . also remove bulb and test with test light , no light , no power ! have light bad bulbs. Also if no power then start at socket and follow wire testing periodically till you find power and the repair wire. I always use a set of jumper cables hooked to the NEG side of battery and to the ground wire of test light to ensure i always have a good ground on my test light.

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1 Answer

My brake light is not working when i apply rear brake. works fine with front brake.


If your rear brake light is not working but the front is, this means the pressure switch for the rear brake light is bad. Find the rear brake master cylinder and follow the metal line out of the master cylinder as it goes back towards the rear wheel. In the line, you'll find a "tee" fitting with a pressure switch screwed into it. Make sure all the wires are on the switch. If so, the switch itself may be bad. Replace the switch.

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1 Answer

When I use the back brake, the brake light won't come on. I have checked the switch and it appears/tests good. I have 12 volts going to the switch. The brake light works with the front brake


Replace the rear brake light switch. I've run into this before as well. When checking the switch with an ohm meter, it appears good but it will not light the rear bulb. The front brake light switch worked correctly as well. I can't explain it but replacing the switch, even though it checks good, solves the problem every time.

Mar 23, 2010 | 2002 Harley Davidson FXDWG Dyna Wide Glide

2 Answers

Rear brake lights remain on.


check the brake switch. it controls a brake relay which may have fused contacts.

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